The 700R4 I had built by Phoenix Transmissions out of Weatherford, TX will work up to 450hp and they have �em up to 575hp. Other mfgs such as Bowtie advertise up to 600hp. As I said, unless the engine is going to be extremely built, the 700R4 and even a well built 2004R will hold up nicely. The 700R4 has a much lower first gear (3.06) compared to a TH400 (2.48) so it�ll launch a bit easier in a heavy car. In addition, the O.D. is great for the highway over the 1:1 of the TH400.
Dale McIntosh
67 El Camino
1967 Chevelle Facts CD in progress
ACES #1709/TC Gold #92
I had mine built by Phoenix Tran, Greg is great & dyno's the tran.
